A 2.3 Viruses

Guiding questions

How can viruses exist with so few genes?
In what ways do viruses vary?

Linking questions

What mechanisms contribute to convergent evolution?
To what extent is the natural history of life characterized by increasing complexity or simplicity?

Syllabus statements

A2.3.1 AHL Structural features common to viruses

A2.3.2 AHL Diversity of structure in viruses

A2.3.3 AHL The lytic cycle of a virus

A2.3.4 AHL The lysogenic cycle of a virus

A2.3.5 AHL Evidence for several origins of viruses from other organisms

A2.3.6 AHL Rapid evolution in viruses

Resources used in class

The power point presentation and the accompanying student notes are used as resources in class - together with activites, discussion, simulations and experiments.

1. A 2.3 HL Viruses - student notes.pdf

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